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Dead Diode?






no man put 6 silicon diodes(the 1n4001 or the 1n4007 works) in series and a 1ohm resistor, conect the driver to your dummy load, check the voltage across the resistor, 1mv=1ma
test%20load01.jpg


domchristo said:
what would you suggest i use? a led with a resistor?
Click to expand...
 
As far as the original question goes: yes, you may have toasted your diode or it may have been DOA. If you don't set your driver up with a test load (AKA Dummy load), your driver may let too much voltage through to the diode before it can adjust to the diode's needs, killing the diode. I killed a diode in the same manner and have since invested in a test load. Another option is that the current that the driver is set to is too low to even reach the diode's threshold for current, and isn't turning it on. That's just my two cents as a new guy though. Hope this helps. :beer:
 
I would put money on you killed it straight up.

You can jump into lasers and expect stuff to fire up and run properly straight off the bat.

You must test and verify the driver matches the specs of the diode before you mate them.

Looking at the specs, the operating current of the diode is 32mA, the driver is capable of 300mA... which is like 10x the rated current....

It appears it is connected the same way a LPC-826 diode is connected, case negative.

spec sheet:http://www.yc-dz.com/productimages/2009122816211673440.pdf

Im not having a go mate, but im telling you how it is.

I take it your an Aussie domchristo?

Fiddy.
 
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Laser diodes are very finicky.

You need to make sure that the output current is within the operating limits of the diode, otherwise you WILL LED it, or kill it outright...

If the diode emits a faint light and doesn't seem to really "lase" so to speak, then it's dead. It's no longer emitting coherent photons, and instead has turned into an inefficient LED.

You need to set a constant current driver to the current the diode needs, with a test load. Then short the leads out, and then connect it up. Boom, lazor photons
 
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